How to activate auto archiving in my machine?

I am using piwik 0.2.34 on my development box which is running on windows XP.What I have noticed is on the start of a new day when I run the Piwik(index.php) for the first time from the browser,the archiving happens at that time(because enable_browser_archiving_triggering is set to 1 in the configuration file) but i want the archiving to take place automatically in the night.What can be the problem?